Sickness
The Yeerks have captured Aftran – the rebel Yeerk working for peace between humans and the Yeerk invaders. Aftran has been in Cassie's brain. When Visser Three interrogates her, he will find out about the Animorphs, Ax, the Chee – everything. The Animorphs have to rescue Aftran – to save themselves. Except they can't. Some kind of illness is going through the team – Ax is so sick that his only chance is an operation, and the other's can't even walk, let alone fight. Only Cassie is OK. So she's got to break into the Yeerk pool on her own, rescue Aftran, and then come home to do brain surgery...
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K. A. Applegate
Katherine Alice Applegate (born 1956) is an American author. Applegate's most popular books are science fiction, fantasy, and adventure novels. She has won the Best New Children's Book Series Award in 1997 in Publishers Weekly.
She also writes books for young readers as Katherine Applegate.
Animorphs
Sometimes weird things happen to people. Ask Jake. He may tell you about the night he and his friends saw the strange light in the sky. He may even tell you about what happened when they realized the "light" was only a plane – from another planet.
Here's where Jake's story gets a little weird. He and his friends are told the human race is under attack, but they're given the chance to fight back.
Animorphs consists of fifty-four primary books, and includes four additional books that complement the series but are not considered mandatory reads. The current recommended reading order for the series is provided below.
Main series Animorphs Series
